142461985 has 8 divisors (see below), whose sum is σ = 171841320. Its totient is φ = 113378304.

The previous prime is 142461973. The next prime is 142462009. The reversal of 142461985 is 589164241.

It can be written as a sum of positive squares in 4 ways, for example, as 399424 + 142062561 = 632^2 + 11919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142461985 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72850 + ... + 74779.

It is an arithmetic number, because the mean of its divisors is an integer number (21480165).

Almost surely, 2^142461985 is an apocalyptic number.

It is an amenable number.

142461985 is a deficient number, since it is larger than the sum of its proper divisors (29379335).

142461985 is a wasteful number, since it uses less digits than its factorization.

142461985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147827.

The product of its digits is 69120, while the sum is 40.

The square root of 142461985 is about 11935.7440069733. The cubic root of 142461985 is about 522.2755123342.

The spelling of 142461985 in words is "one hundred forty-two million, four hundred sixty-one thousand, nine hundred eighty-five".